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Date:         Thu, 13 Jan 2005 20:49:32 -0600
Reply-To:     Chuck Mathis <cmathis@HOUSTON.RR.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Chuck Mathis <cmathis@HOUSTON.RR.COM>
Subject:      Re: O2 Sensor Wire
Comments: To: msutts@earthlink.ne
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Matt,

With the O2 sensor disconnected the engine runs fine and the Digitool shows a constant 0.40.

The guitar cable sounds interesting. Are you talking about the same cable I use between my Strat and the amp or the shielded cable one might find inside say a PRS or Les Paul?

Chuck '85 Wolfsburg Westy - 'Roland the Road Buffalo'

> Hey Chuck, >     I have a 88GL with a Digifant, but I have a feeling we may have > the same > trouble. >     I was crippled by it once before- no power, running rich, bucking > etc., > and replaced way too many parts before finding out it was a short in

> that > green wire.  Got nailed again over the holidays in VT in the rain, and > finally replaced that wire with a guitar/instrument cable. It's been

> fine > ever since. Basically the same kind of wire- current on the inside, > shield > on the out, but much more robustly built. I ran it from the ECU > connector > along the outside of the loom to the engine bay. > >     Regardless of all my D.I.Y. nonsense, and looking at page 24.20 in > the > Bentley (for Digijet now): Check the ECU connector at pins 5 and 7(5

> is the > current and 7 is the ground it seems). If there is ANY continuity > between > the two, even with the O2 sensor disconnected at the tailpipe, the ECU

> will > freak out, and make the van run bad-to-worse. Why the ECU should care

> when > the sensor is disconnected, I have no idea. But as soon as I cut that

> wire > right at the base of the ECU connector, the van ran fine, albeit in > Open > Loop mode. I put in the new cable when I got home. > >     Good luck. > > -Matt Sutton > 88GL > > >


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